Tivy is a word that is often misspelled as "Tivvy," but the correct spelling is "Tivy." The word is pronounced as /ˈtɪvi/ with two syllables. The first syllable is pronounced as "ti" and the second syllable is pronounced as "vi." The word is derived from the River Tivy (Afon Teifi) in Wales, which is the longest river in that country. Thus, the correct spelling of Tivy should always be used in professional writing and communication.
Contr. of tantivy, which see.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.